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AndreaS73

Member Since 21 May 2012
Offline Last Active Feb 04 2014 11:26 PM
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Topics I've Started

Sigma 15mm + kenko 1,4

03 February 2014 - 08:42 AM

Hello,
I've just tried to use Sigma 15mm + kenko 1,4x with a 4" mini-dome (with Nikon D800). Above water no problem, AF was ok in all the range, but underwater I realized that I couldn't focus at the minimum, and the minimal focus distance got longer than above water of about 8cm. Is it normal? It's due to the dimension/shape of the dome?
I think to try to use an extension of 1,5cm betweeen dome and housing, should this help?
Thank for any suggestion.

4 strobes together

30 January 2014 - 02:17 PM

Has someone tried to use 4 strobes all together?
The configuration I'm thinking about is made by 2 couples of strobes positioned at the end of a classical double arm, at both sides of the camera. I'm thinking to use 4 Inon z240 to have more powerful light especially in WA photo, now I've 2 inonZ240. Someone could say that I should simply use 2 more powerful strobes and in fact this was my first thought.... Searching for more powerful strobes I found Subtronic, Seacam, Hartemberger.... All of this expensive, heavy, big and with their own battery pack... And moreover for someone of this I heard of some problems about affidability and assistence.
So I'm thinking that should be better adding 2 z240, they are lighter and cheaper, and they use common AA battery.
For sincronization I'm thinking to use double Sync cord for primary strobes and optical fiber for the secondary strobes. I mean one primary strobe on the left and the other primary on the right, both coupled via optical fiber with the secondary ones.
What do you think about it? Any similar esperience?
Thanks for any opinion or suggestion.

CFWA

11 July 2013 - 06:40 AM

For CF/WA photos, wich is better, sigma15mmFE + 1,4xTC or Nikon 16-35mm? And Why?